What I am saying is that
all he predestined he will call, justify and glorify. However,
all the justified have not been predestined to be glorified. Here is a quote from Saint Augustine from the
Gift of Perseverance chapter 1
I Have now to consider the subject of perseverance with greater care; for in the former book also I said some things on this subject when I was discussing the beginning of faith. I assert, therefore, that the perseverance by which we persevere in Christ even to the end is the gift of God; and I call that the end by which is finished that life wherein alone there is peril of falling. Therefore it is uncertain whether any one has received this gift so long as he is still alive. For if he fall before he dies, he is, of course, said not to have persevered; and most truly is it said. How, then, should he be said to have received or to have had perseverance who has not persevered? For if any one have continence, and fall away from that virtue and become incontinent,— or, in like manner, if he have righteousness, if patience, if even faith, and fall away, he is rightly said to have had these virtues and to have them no longer; for he was continent, or he was righteous, or he was patient, or he was believing, as long as he was so; but when he ceased to be so, he no longer is what he was. But how should he who has not persevered have ever been persevering, since it is only by persevering that any one shows himself persevering,— and this he has not done? But lest any one should object to this, and say, If from the time at which any one became a believer he has lived— for the sake of argument— ten years, and in the midst of them has fallen from the faith, has he not persevered for five years? I am not contending about words. If it be thought that this also should be called perseverance, as it were for so long as it lasts, assuredly he is not to be said to have had in any degree that perseverance of which we are now discoursing, by which one perseveres in Christ even to the end. And the believer of one year, or of a period as much shorter as may be conceived of, if he has lived faithfully until he died, has rather had this perseverance than the believer of many years’ standing, if a little time before his death he has fallen away from the steadfastness of his faith.
From Chapter 21 from the same book:
But of two pious men, why to the one should be given perseverance unto the end, and to the other it should not be given, God’s judgments are even more unsearchable. Yet to believers it ought to be a most certain fact that the former is of the predestinated, the latter is not… Lastly, had not both been called, and followed Him that called them? And had not both become, from wicked men, justified men, and both been renewed by the laver of regeneration? But if he were to hear this who beyond all doubt knew what he was saying, he might answer and say: These things are true. In respect of all these things, they were of us.
So Augustine, nor did any Church Father or major theologian before or after him, taught Calvinism’s perseverance of the saints. Regarding Martin Luther, you can check out the following websites:
lcms.org/pages/internal.asp?NavID=2647
Luther believed that salvation could be lost through loss of faith and deliberate sin leads to loss of faith:
In his Smalcald Articles, Luther wrote the following:
**On the other hand, if certain sectarists would arise, some of whom are perhaps already extant, and in the time of the insurrection [of the peasants] came to my own view, holding that all those who had once received the Spirit or the forgiveness of sins, or had become believers, even though they should afterwards sin, would still remain in the faith, and such sin would not harm them, and [hence] crying thus: “Do whatever you please; if you believe, it all amounts to nothing; faith blots out all sins,” etc.—they say, besides, that if any one sins after he has received faith and the Spirit, he never truly had the Spirit and faith: I have had before me [seen and heard] many such insane men, and I fear that in some such a devil is still remaining [hiding and dwelling].
43] It is, accordingly, necessary to know and to teach that when holy men, still having and feeling original sin, also daily repenting of and striving with it, happen to fall into manifest sins, as David into adultery, murder, and blasphemy, that then faith and the Holy Ghost has departed from them **[they cast out faith and the Holy Ghost]. For the Holy Ghost does not permit sin to have dominion, to gain the upper hand so as to be accomplished, but represses and restrains it so that it must not do what it wishes. But if it does what it wishes, the Holy Ghost and faith are [certainly] not present
To be continued…
God Bless,
Michael
You found me! 
For now, I will tell you this. The doctrine of the perseverance of the saints made its first appearance in Christian history not in the writings of Augustine or even Martin Luther, but in the writings of John Calvin. There is not a single piece of credible evidence that indicates that Christians believed in perseverance of saints prior to John Calvin. It is strange that a doctrine that is supposedly clearly taught in Scripture and so essential to a proper understanding of salvation was not only overlooked by all of the greatest saints and learned theologians for 1, 500 years, particularly those who taught a very high view of predestination (Augustine), but explicitly contradicted. Of course, I also believe that perseverance of the saints was not a part of Christian teaching for 1,500 years because it was not taught by Jesus or His apostles and it is contradicted by Scripture.
To be troubled about whether or not we are among the elect is to look at self - which is sure to be depressing. Jesus poured out His Love in self-giving self-sacrifice - which is surely the very opposite